盘式拉杆转子双稳态振动特性

钱征文; 程礼; 陈卫; 李应红

盘式拉杆转子双稳态振动特性

空军工程大学工程学院, 西安 710038

计量
- 文章访问数: 1959
- HTML浏览量: 107
- PDF量: 17
- 被引次数: 0
出版历程
- 收稿日期: 2010-11-17
- 修回日期: 2011-02-17
- 刊出日期: 2011-07-28

Analysis on bistable response of a disk-rod-fastening rotor

The Engineering Institute,Air Force Engineering University,Xi'an 710038,China

摘要

摘要: 针对盘式拉杆转子出现的"双稳态"振动故障,考虑拉杆转子特殊的结构形式以及各个接触面的接触效应对转子刚度的影响,将拉杆和接触面等效为一个具有非线性刚度项的抗弯弹簧,建立了拉杆转子的运动方程.利用谐波平衡法,同时引入预测校正算法和同伦算法,对拉杆转子的振动特性进行了计算.简化模型很好地重现工程实际中出现的"双稳态"振动特征.结果表明:由于结构上的不连续,各个接触界面的接触效应给整个转子结构引入了非线性因素是盘式拉杆转子"双稳态"特征出现的主要原因,通过调整系统参数的大小,可以避免"双稳态"区的出现.
- 拉杆转子 /
- 双稳态 /
- 非线性 /
- 刚度 /
- 预测校正 /
- 同伦映射
Abstract: In view of the fault of bistable response appeared in the disk-rod-fastening rotor,the peculiar structure of this kind of rotor was taken into account.By considering the influence of contact effect of discontinuous interfaces on the rotor stiffness,the tie-rod and the contact surface between the wheel disks were equated to a bending resistance spring with nonlinear stiffness.Then the equation of motion of the disk-rod-fastening rotor was established according to this simplification.The vibration characteristics of rotor were calculated by the harmonic balance method with introduction of the predict-correct and homotopy arithmetics.The bistable response behaviors recurred in this simplified model were much closer to the measured results in flight.The study shows that the nonlinear factor of stiffness,resulted from the contact effect of discontinuous interfaces,was a main reason leading to the appearance of bistable response in the disk-rod-fastening rotor.The bistable region can be reduced by the way of adjusting the system parameters to some appropriate values.
- rod-fastening rotor /
- bistable response /
- nonlinear /
- stiffness /
- predict-correct /
- homotopic map

HTML

参考文献(12)

[1]	Zheng T,Hasebe N.Nonlinear dynamic behaviors of a complex rotor-bearing system[J].Journal of Applied Mechanics,2000,67(3):485-495.
[2]	Sinou J J.Effects of crack on the stability of a nonlinear rotor system[J].International Journal of Nonlinear Mechanics,2007,42(7):959-972.
[3]	王立刚,曹登庆,王晋麟,等.椭圆转子-轴承系统的稳定性与分岔[J].航空动力学报,2008,23(2):263-269. WANG Ligang,CAO Dengqing,WANG Jinlin,et al.Stability and bifurcation analysis on the bearing-rotor system[J].Journal of Aerospace Power,2008,23(2):263-269.(in Chinese)
[4]	李朝峰,王得刚,刘杰,等.非线性转子-轴承系统的动力学降维分析与试验研究[J].振动与冲击,2009,28(8):124-127. LI Chaofeng,WANG Degang,LIU Jie,et al.Dynamic characteristics analysis and experimental study on high-dimensional nonlinear bearing-rotor system[J].Journal of Vibration and Shock,2009,28(8):124-127.(in Chinese)
[5]	LI Songtao,XU Qingyu,ZHANG Xiaolong.Nonlinear dynamic behaviors of a rotor-labyrinth seal system[J].Nonlinear Dynamics,2007,47(4):321-329.
[6]	Sinou J J.Effects of a crack on the stability of a non-linear rotor system[J].International Journal of Non-Linear Mechanics,2007,42:959-972.
[7]	Ali A A,George Y B,Jeffrey J T.An integrated NDE and FEM characterization of composite rotors[J].Proceeding of SPIE,2001,4336:43-54.
[8]	汪光明,饶柱石,夏松波.拉杆转子力学模型的研究[J].航空学报,1993,14(8):419-423. WANG Guangming,RAO Zhushi,XIA Songbo.Researches on the mechanical model of rod fastening rotor[J].Acta Aeronautica et Astronautica Sinica,1993,14(8):419-423.(in Chinese)
[9]	章圣聪,王艾伦.盘式拉杆转子的振动特性研究[J].振动与冲击,2009,28(4):117-120. ZHANG Shengcong,WANG Ailun.Analysis of vibra-tion characteristics of a disk-rod-fastening rotor[J].Journal of Vibration and Shock,2009,28(4):117-120.(in Chinese)
[10]	王艾伦,骆舟.拉杆转子扭转振动研究[J].振动与冲击,2009,28(5):165-168. WANG Ailun,LUO Zhou.Study on rod fastening rotor’s torsional vibration[J].Journal of Vibration and Shock,2009,28(5):165-168.(in Chinese)
[11]	高锐,袁奇,高进.燃气轮机拉杆转子有限元模型研究及临界转速计算[J].热能动力工程,2009,24(3):305-308. GAO Rui,YUAN Qi,GAO Jin.A study of a finite element model for a gas turbine tie-rod rotor and its critical speed calculation[J].Journal of Engineering for Thermal Energy & Power,2009,24(3):305-308.(in Chinese)
[12]	苏清友.航空涡喷涡扇发动机主要零部件定寿指南[M].北京:航空工业出版社,2004.